Open AccessLow temperature dehydrogenation properties of ammonia borane within carbon nanotube arrays: a synergistic effect of nanoconfinement and alane
Author(s) -
Zhijie Cao,
Liuzhang Ouyang,
Michael Felderhoff,
Min Zhu
Publication year - 2020
Publication title -
rsc advances
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.746
H-Index - 148
ISSN - 2046-2069
DOI - 10.1039/d0ra02283g
Subject(s) - ammonia borane , dehydrogenation , hydrogen storage , carbon nanotube , chemistry , borane , hydrogen , chemical engineering , ammonia , carbon fibers , kinetics , nanotechnology , materials science , organic chemistry , catalysis , composite material , quantum mechanics , composite number , engineering , physics
Ammonia borane (AB, NH 3 BH 3 ) is considered as one of the most promising hydrogen storage materials for proton exchange membrane fuel cells due to its high theoretical hydrogen capacity under moderate temperatures. Unfortunately, its on-board application is hampered by the sluggish kinetics, volatile byproducts and harsh conditions for reversibility. In this work, AB and AlH 3 were simultaneously infiltrated into a carbon nanotube array (CMK-5) to combine the synergistic effect of alane with nanoconfinement for improving the dehydrogenation properties of AB. Results showed that the transformation from AB to DADB started at room temperature, which promoted AB to release 9.4 wt% H 2 within 10 min at a low temperature of 95 °C. Moreover, the entire suppression of all harmful byproducts was observed.